cbs 5 reporter linda yee tells us this was no random crime. >> reporter: no, it wasn't. in fact, they have arrested four women and one man in a hercules home this morning. now, police say this visitacion valley neighborhood was the dumping ground for their two victims. investigators call this case so bizarre, it is something you see only in the movies. now, a man and woman were tied up and gagged, beaten, one shot left on the street early sunday evening. information led police to the five suspects. they say a 32-year-old san francisco woman and a 21-year- old oakland man have been charged with murder. three women, 19, 22 and 24 years old from hercules have been charged with accessory to murder. investigators say the victims knew their attackers. >> it was established that there was an extensive relationship between the victims and the suspect in this case. i cannot get into details about the relationships. >> reporter: police say they wouldn't elaborate on a motive, nor would they confirm that this case may be tied to prostitution, trafficking or a drug ring. one of the